/**
 * (C) Copyright IBM Corp. 2010, 2015
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package com.ibm.bi.dml.lops;

import com.ibm.bi.dml.lops.LopProperties.ExecLocation;
import com.ibm.bi.dml.lops.LopProperties.ExecType;
import com.ibm.bi.dml.lops.compile.JobType;
import com.ibm.bi.dml.parser.Expression.DataType;
import com.ibm.bi.dml.parser.Expression.ValueType;


public class RepMat extends Lop 
{
	
	public static final String OPCODE = "rep";
	
	private boolean _repCols = true;
	
	/**
	 * Constructor to setup a partial Matrix-Vector Multiplication
	 * 
	 * @param input
	 * @param op
	 * @return 
	 * @throws LopsException
	 */	
	public RepMat(Lop input1, Lop input2, boolean repCols, DataType dt, ValueType vt) 
		throws LopsException 
	{
		super(Lop.Type.RepMat, dt, vt);		
		this.addInput(input1);
		this.addInput(input2);
		input1.addOutput(this);
		input2.addOutput(this);
	
		_repCols = repCols;
		
		//setup MR parameters 
		boolean breaksAlignment = true;
		boolean aligner = false;
		boolean definesMRJob = false;
		lps.addCompatibility(JobType.GMR);
		lps.addCompatibility(JobType.DATAGEN);
		lps.setProperties( inputs, ExecType.MR, ExecLocation.Map, breaksAlignment, aligner, definesMRJob );
	}


	public String toString() {
		return "Operation = RepMat";
	}
	
	@Override
	public String getInstructions(int input_index1, int input_index2, int output_index)
	{
		StringBuilder sb = new StringBuilder();
		
		sb.append(getExecType());
		sb.append(Lop.OPERAND_DELIMITOR);
		
		sb.append(OPCODE);
		
		sb.append(Lop.OPERAND_DELIMITOR);
		sb.append( getInputs().get(0).prepInputOperand(input_index1));
		
		sb.append(Lop.OPERAND_DELIMITOR);
		sb.append(_repCols);
		
		sb.append(Lop.OPERAND_DELIMITOR);
		sb.append( getInputs().get(1).prepScalarInputOperand(getExecType()));
		
		sb.append(Lop.OPERAND_DELIMITOR);
		sb.append( this.prepOutputOperand(output_index));
		
		return sb.toString();
	}
}
